those letters addressed to president obama and mississippi republican senator roger wicker. we have learned the suspect is a man from tupelo, mississippi, a man with a long history of sending letters to lawmakers in washington. investigators say that early tests on those letters were positive. that mail never came close to the president or the senator for that matter. they set off alarms though in postal screening facilities away from the white house and away from chill. i want to start our coverage this hour now with mike emanuel who is live on